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9
Code: 02250145
--
604 SR
--
250 --- SR
--
3000
English
5 Maintenance
Before accessing live electrical parts
, disconnect the power supply to the
dryer using disconnect switch QS or disconnect the cable connections.
SAFETY DEVICES
ST
high temperature thermostat
(installed on models SR
-
250 -- SR
-
3000
)
HP
high pressure switch
(installed on models SR
-
250 -- SR
-
3000
)
PI
compressor internal protection
(installed on models SR
-
1600 -- SR
-
3000
)
COMPRESSOR TYPE
PISTON
(installed on model SR
-
250)
SCROLL
(installed on models SR
-
325 -- SR
-
3000)
N.B.:
Always use original spares supplied by the manufacturer.
Failure to do so renders the manufacturer not liable for incorrect unit operation.
5.1 Preventive maintenance
For optimum performance from your dryer follow the periodic maintenance sched-
ule described below.
WEEKLY
CONDENATE DRAIN
WEEKLY
CONDENATE DRAIN
See condensate drain manual supplied separately.
MONTHLY
COMPRESSOR
Make sure the compressor head temperature is between 59
˚
F (15
˚
C)
MONTHLY
Make sure the compressor head temperature is between 59 F (15 C)
and 203
˚
F (95
˚
C) when running. If this is not the case consult Chap.8.
EVERY 4 MONTHS
CONDENSER
Remove any dust from the condenser fins.
COMPRESSOR
EVERY 4 MONTHS
COMPRESSOR
Make sure compressor power consumption complies with data plate
specifications.
CONDENSATE DRAIN
Completely disassemble the drain and clean all its components
Completely disassemble the drain and clean all its components.
Refer also to condensate drain manual supplied separately.
YEARLY
WATER---COOLED MODELS
In applications with a very high fouling tendency (eg. when using ex-
tremely hard water) clean the exchanger by circulating a cleaning liq-
uid. Use a tank with a weak acid, 5% phosphoric acid, or if the exchang-
er is frequently cleaned 5% oxalic acid. Pump the cleaning liquid
through the exchanger. For optimum cleaning the cleaning solution
flow rate should be a minimum of 1.5 times the normal flow rate, pre-
ferably in a backflush mode. Afterwards rinse with large amounts of
fresh water, in order to get rid of all the acid, before starting up the sys-
tem again. Clean at regular intervals.
Heat exchanger
Weak acid
water
in
water
out
The control panel is equipped with terminals for the connection of a remote alarm.
Do not use solvents to clean the control panel on the front of the unit.
Содержание SR-1000
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